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lutik1710 [3]
4 years ago
11

Unknown value please help !!!!!

Mathematics
2 answers:
horsena [70]4 years ago
7 0
The answer would be 15
dolphi86 [110]4 years ago
5 0

The answer is 15.

You can use the butterfly method. Multiply 42 times 5. Then divide that by 14.

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I need help, do I have these pink dots in the right place?
irakobra [83]

Answer:

no, you actually don't.

Step-by-step explanation:

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hope this helped!

6 0
3 years ago
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velikii [3]
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6 0
3 years ago
A random sample of 20 purchases showed the sample mean of $48.77 and the sample standard deviation s is $17.58. How large is the
laila [671]

Answer:

<h2>$5.03</h2>

Step-by-step explanation:

Given data          

Sample Mean (M):  $48.77  

Sample Size (n): 20

Standard Deviation (σ) :  $17.58

Confidence Level: 80%

 we know that z*-Values for 80% Confidence  Levels is 1.28

the expression for margin of error is given bellow\

MOE= z*σ/√n

We can now substitute into the expression and solve for the MOE as

MOE= 1.28*17.58/√20

MOE= 22.502/4.47

MOE= 22.502/4.47

MOE= 5.03

The margin of error for a 80 % confidence interval is $5.03

3 0
4 years ago
6x + 14 = 20<br> Show your work <br> Solve the equation
DIA [1.3K]

Answer:

X = 1

Step-by-step explanation:

subtract 14 from both sides

6x = 6

divide both sides by 7

X = 1

5 0
3 years ago
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Which angle relationship alone could be used as a reason that two angles are congruent?
zimovet [89]

Supplementary angles

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